Abstract
Abstract Iron and Zn source and rate experiments were carried out in the field on soils where rice ( Oryza sativa L.) grain yields had been reduced drastically in previous years by seedling chlorosis. Soils where seedling chlorosis occurred were higher in pH, HCO 3 and Ca content and lower in Fe and Zn than adjacent soils where normal growth occurred. Iron sulfate, alone or in combination with ZnSO 4 , was the most effective in correcting seedling chlorosis. A maximum yield increase of over 2,100 kg/ha was obtained with the application of 100 kg/ha of Fe (from Fe 2 (SO 4 ) 3 ). Organic sources of Fe and Zn were less effective in correcting needling chlorosis and producing yield increases.
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Claims 7
Claim · model-written summary
Chlorotic rice soils had higher pH, bicarbonate and calcium than normal-growth soils.
- Taxon
- rice
Oryza sativat0 - Outcome
- pH, HCO 3 and Ca contente0
- Direction
- highere0
- Comparator
- adjacent soils where normal growth occurrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soils where seedling chlorosis occurred were higher in pH, HCO 3 and Ca content and lower in Fe and Zn than adjacent soils where normal growth occurred.”
t0“Chlorotic Rice”
Claim · model-written summary
Chlorotic rice soils had lower iron and zinc than normal-growth soils.
- Taxon
- riceOryza sativat0
- Outcome
- Fe and Zne0
- Direction
- lowere0
- Comparator
- adjacent soils where normal growth occurrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soils where seedling chlorosis occurred were higher in pH, HCO 3 and Ca content and lower in Fe and Zn than adjacent soils where normal growth occurred.”
t0“Chlorotic Rice”
Claim · model-written summary
Iron sulfate alone was most effective at correcting seedling chlorosis.
- Taxon
- riceOryza sativat0
- Treatment
- Iron sulfate, alonee0
- Outcome
- seedling chlorosise0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron sulfate, alone or in combination with ZnSO 4 , was the most effective in correcting seedling chlorosis.”
t0“Chlorotic Rice”
Claim · model-written summary
Iron sulfate with zinc sulfate was most effective at correcting seedling chlorosis.
- Taxon
- riceOryza sativat0
- Treatment
- Iron sulfate, alone or in combination with ZnSO 4e0
- Outcome
- seedling chlorosise0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Iron sulfate, alone or in combination with ZnSO 4 , was the most effective in correcting seedling chlorosis.”
t0“Chlorotic Rice”
Claim · model-written summary
100 kg/ha Fe increased yield by more than 2,100 kg/ha at the maximum.
- Taxon
- riceOryza sativat0
- Treatment
- application of 100 kg/ha of Fee0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- over 2,100 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A maximum yield increase of over 2,100 kg/ha was obtained with the application of 100 kg/ha of Fe (from Fe 2 (SO 4 ) 3 ).”
t0“Chlorotic Rice”
Claim · model-written summary
Organic Fe and Zn sources corrected chlorosis less effectively.
- Taxon
- riceOryza sativat0
- Treatment
- Organic sources of Fe and Zne0
- Outcome
- needling chlorosise0
- Direction
- less effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic sources of Fe and Zn were less effective in correcting needling chlorosis and producing yield increases.”
t0“Chlorotic Rice”
Claim · model-written summary
Organic Fe and Zn sources produced smaller yield increases.
- Taxon
- riceOryza sativat0
- Treatment
- Organic sources of Fe and Zne0
- Outcome
- yield increasese0
- Direction
- less effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic sources of Fe and Zn were less effective in correcting needling chlorosis and producing yield increases.”
t0“Chlorotic Rice”
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